Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
dong nong » cong nong, dong cong, dong dong
dan thanh » dang thanh, danh thanh, ban thanh
thanh mau » hanh mau, thanh san, thanh hai
dung van » duong van, dung va, dang van
nong dan » cong dan, nong san, nguong dan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chiet tach)) - sach dung van dong nong dan thanh mau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chiet tach)) - sach dung van dong nong dan thanh mau.
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chiet tach)) - sach dung van dong nong dan thanh mau*.